DVD or VHS Available Here
On VHS/DVD here:
http://www.lovingtheclassics.com/rememberlastnight.html
Just received my copy within two weeks, so I can attest that they're a trustworthy source.
Video quality is what one would expect from a non-remastered source, but it's better than not seeing the film at all (reportedly director James Whale's favorite of his films).
Enjoy.